When you click on [My Stories] you will be presented a list of your stories . At the top of the list are three buttons [All Stories] [Stories With New Comments] [Drafts] . Click [Drafts] and if you actually saved it then it should show up there.
that just happened to me-- i finished my story then to post it it said i had to log in- altho i thought i already was-- but i logged in again, then couldnt find where draft went!!!! so ok heres how i found mine --- i pushed back a couple times til i found button to MY HOME PG--- then put cursor on "stories" and 2 menu options pop down= "compose" and "DRAFTS" ----there u have it! goodluck!!!